Ton Baltissen , researcher at Wageningen University and Research Centre , in the Netherlands, who works  in the Applied plant research (PPO) department, gives youris.

A solution is much needed to fight droughts and preserve crops. Researchers have now developed a device capable of checking the humidity in the soil, and releasing irrigation water as needed – just enough without wasting it .

Algae are an interesting natural resource because they proliferate quickly. They are not impinging on food production. And they need nothing but sunlight and a bit of waste water to grow on.